157 lines
4.6 KiB
C
157 lines
4.6 KiB
C
/* ddcProperty.c: Make the DDC monitor information available to clients
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* as properties on the root window
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*
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* Copyright 1999 by Andrew C Aitchison <A.C.Aitchison@dpmms.cam.ac.uk>
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*/
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/* $XFree86: xc/programs/Xserver/hw/xfree86/ddc/ddcProperty.c,v 1.9tsi Exp $ */
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#include "misc.h"
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#include "xf86.h"
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/* #include "xf86_ansic.h" */
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/* #include "xf86_OSproc.h" */
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#include "Xatom.h"
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#include "property.h"
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#include "propertyst.h"
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#include "xf86DDC.h"
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#define EDID1_ATOM_NAME "XFree86_DDC_EDID1_RAWDATA"
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#define EDID2_ATOM_NAME "XFree86_DDC_EDID2_RAWDATA"
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#define VDIF_ATOM_NAME "XFree86_DDC_VDIF_RAWDATA"
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Bool
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xf86SetDDCproperties(ScrnInfoPtr pScrnInfo, xf86MonPtr DDC)
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{
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Atom EDID1Atom=-1, EDID2Atom=-1, VDIFAtom=-1;
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CARD8 *EDID1rawdata = NULL;
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CARD8 *EDID2rawdata = NULL;
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int i, ret;
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Bool makeEDID1prop = FALSE;
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Bool makeEDID2prop = FALSE;
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#ifdef DEBUG
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ErrorF("xf86SetDDCproperties(%p, %p)\n", pScrnInfo, DDC);
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#endif
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if (pScrnInfo==NULL || pScrnInfo->monitor==NULL || DDC==NULL) {
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return FALSE;
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}
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#ifdef DEBUG
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ErrorF("pScrnInfo->scrnIndex %d\n", pScrnInfo->scrnIndex);
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ErrorF("pScrnInfo->monitor was %p\n", pScrnInfo->monitor);
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#endif
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pScrnInfo->monitor->DDC = DDC;
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if (DDC->ver.version == 1) {
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makeEDID1prop = TRUE;
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} else if (DDC->ver.version == 2) {
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int checksum1;
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int checksum2;
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makeEDID2prop = TRUE;
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/* Some monitors (eg Panasonic PanaSync4)
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* report version==2 because they used EDID v2 spec document,
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* although they use EDID v1 data structure :-(
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*
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* Try using checksum to determine when we have such a monitor.
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*/
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checksum2 = 0;
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for (i=0; i<256; i++) { checksum2 += DDC->rawData[i]; }
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if ( (checksum2 % 256) != 0 ) {
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xf86DrvMsg(pScrnInfo->scrnIndex,X_INFO, "Monitor EDID v2 checksum failed\n");
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xf86DrvMsg(pScrnInfo->scrnIndex,X_INFO, "XFree86_DDC_EDID2_RAWDATA property may be bad\n");
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checksum1 = 0;
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for (i=0; i<128; i++) { checksum1 += DDC->rawData[i]; }
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if ( (checksum1 % 256) == 0 ) {
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xf86DrvMsg(pScrnInfo->scrnIndex,X_INFO, "Monitor EDID v1 checksum passed,\n");
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xf86DrvMsg(pScrnInfo->scrnIndex,X_INFO, "XFree86_DDC_EDID1_RAWDATA property created\n");
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makeEDID1prop = TRUE;
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}
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}
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} else {
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xf86DrvMsg(pScrnInfo->scrnIndex, X_PROBED,
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"unexpected EDID version %d revision %d\n",
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DDC->ver.version, DDC->ver.revision );
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}
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if (makeEDID1prop) {
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if ( (EDID1rawdata = xalloc(128*sizeof(CARD8)))==NULL ) {
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return FALSE;
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}
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EDID1Atom = MakeAtom(EDID1_ATOM_NAME, sizeof(EDID1_ATOM_NAME), TRUE);
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for (i=0; i<128; i++) {
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EDID1rawdata[i] = DDC->rawData[i];
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}
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#ifdef DEBUG
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ErrorF("xf86RegisterRootWindowProperty %p(%d,%d,%d,%d,%d,%p)\n",
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xf86RegisterRootWindowProperty,
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pScrnInfo->scrnIndex,
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EDID1Atom, XA_INTEGER, 8,
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128, (unsigned char *)EDID1rawdata );
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#endif
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ret = xf86RegisterRootWindowProperty(pScrnInfo->scrnIndex,
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EDID1Atom, XA_INTEGER, 8,
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128, (unsigned char *)EDID1rawdata
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);
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if (ret != Success)
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ErrorF("xf86RegisterRootWindowProperty returns %d\n", ret );
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}
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if (makeEDID2prop) {
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if ( (EDID2rawdata = xalloc(256*sizeof(CARD8)))==NULL ) {
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return FALSE;
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}
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for (i=0; i<256; i++) {
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EDID2rawdata[i] = DDC->rawData[i];
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}
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EDID2Atom = MakeAtom(EDID2_ATOM_NAME, sizeof(EDID2_ATOM_NAME), TRUE);
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#ifdef DEBUG
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ErrorF("xf86RegisterRootWindowProperty %p(%d,%d,%d,%d,%d,%p)\n",
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xf86RegisterRootWindowProperty,
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pScrnInfo->scrnIndex,
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EDID2Atom, XA_INTEGER, 8,
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256, (unsigned char *)EDID2rawdata );
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#endif
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ret = xf86RegisterRootWindowProperty(pScrnInfo->scrnIndex,
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EDID2Atom, XA_INTEGER, 8,
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256, (unsigned char *)EDID2rawdata
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);
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if (ret != Success)
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ErrorF("xf86RegisterRootWindowProperty returns %d\n", ret );
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}
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if (DDC->vdif) {
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#define VDIF_DUMMY_STRING "setting dummy VDIF property - please insert correct values\n"
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#ifdef DEBUG
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ErrorF("xf86RegisterRootWindowProperty %p(%d,%d,%d,%d,%d,%p)\n",
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xf86RegisterRootWindowProperty,
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pScrnInfo->scrnIndex,
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VDIFAtom, XA_STRING, 8,
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strlen(VDIF_DUMMY_STRING), VDIF_DUMMY_STRING
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);
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#endif
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VDIFAtom = MakeAtom(VDIF_ATOM_NAME, sizeof(VDIF_ATOM_NAME), TRUE);
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ret = xf86RegisterRootWindowProperty(pScrnInfo->scrnIndex,
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VDIFAtom, XA_STRING, 8,
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strlen(VDIF_DUMMY_STRING),
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VDIF_DUMMY_STRING
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);
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if (ret != Success)
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ErrorF("xf86RegisterRootWindowProperty returns %d\n", ret );
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}
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return TRUE;
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}
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